Question

guys.
I have an ASP.NET MVC page where the model is being edited.
On each action executing I have a new controller, so I don’t get an updated model.
I’m saving a model instance into Session[“MyModelKey”]. But every time an action is executed, I have unmodified instance there even if I have changed values in textboxes which were created like this:

@Html.LabelFor(model => model.EMail)
@Html.TextBoxFor(model => model.EMail)
@Html.LabelFor(model => model.Country)
@Html.TextBoxFor(model => model.Country)
@Html.ActionLink(“MyAction”, “MyController”)

Controller:

public class MyController : Controller
{
    public ActionResult MyAction()
    {
       //Every time this action is executed - I have a new controller instance
       //So I have null in View.Model
       //I get Session["MyModelKey"] here, 
       //But the model instance properties are not updated 
       //even though I have updated E-mail and Country properties of the model in the UI
    }
}

So, how can I get an updated model?

Thanks in advance.

Answer 1

No need to save to session the model binder will work behind the scenes to match the posted form values to your model properties.

Make sure you use a submit button though, and wrap the UI elements with a form so the page will post. Your action link will not have the same outcome.

public class SomeFormModel
{
    public string Email { get; set; }
    public string Country { get; set; }
}

public class MyController : Controller
{
    public ActionResult MyAction()
    {
        return View();
    }

    [HttpPost]
    public ActionResult MyAction(SomeFormModel model)
    {
        return View(model);
    }
}